Microsurgical treatment of large and giant paraclinoid carotid aneurysms using a revised endovascular suction decompression technique with Invatec Mo.Ma device.

Endovascular retrograde suction decompression (RSD) with balloon occlusion of the internal carotid artery is helpful to facilitate clipping large and giant paraclinoid carotid aneurysms. The authors reported a revised endovascular technique without internal carotid access using Mo.Ma device and analyzed its feasibility. In the series, 15 consecutive patients harboring 15 large and giant paraclinoid carotid aneurysms were clipped with assistance of this revised RSD technique. The technical feasibility of the procedure, procedure-related complications, angiographic results, and clinical outcome were evaluated. Technical success was achieved in 14 patients with aneurysm neck clipping and internal carotid artery (ICA) patent. No complication related to this endovascular technique occurred. At follow-up (mean time 15.3months), the modified Rankin Scale score was excellent in 11 patients, good in two patients and poor in one patient. Their preliminary experience indicates that revised retrograde suction decompression technique with Mo.Ma device seems effective and safe in the surgical treatment of large and giant paraclinoid ICA aneurysms.